Bolens 137-360-300 - Manual (Page 11)

step 4. Remove the transmission belt from the
engine pulley. See figure 24.
Step 5. Place the blade engagement lever in the
engaged position (See figure 25.) and
loosen the center locknut on the blade
idler. See figure 26.
/ i "
Pulley ,
,,
Blade Engagement Lever
(Shown Disengaged}^
FIGURE 25. BLADE ENGAGEMENT LEVER
NOTE
It may be necessary to spring the
belt guard out of the way. When in­
stalling the new belt be sure to put
the belt guard back in the original
position. See figure 24.
FIGURE 26. BELT IDLER
NOTE
Use a V 2 ” open end wrench. When
installing the new belt be sure the
belt clip is in the same position as
shown in figure 26.
Step 6. With the blade engagement lever
disengaged position, remove the
belt from the engine pulley.
in the
blade
Step 7. Remove the belt guard on the blade
spindle pulley. Unhook the belt from the
pulley.
Step 8. Pull the belt through from the bottom
side. Move the blade engagement lever
between the engaged position and the
disengaged position as you remove the
belt.
Step 9. Install the new belt and reassemble.
BELT TROUBLE SHOOTING
CREEPING OR BELT WEAR. See figure 24.
The position of the belt clip on the idler bracket
assembly is important for proper operation of your
mower. Improper position of the belt clip can
cause damage to the belt or it can allow the
mower to “creep” when the clutch pedal is not
depressed. Proper positioning will not allow the
belt clip to touch the belt when the belt is
tightened. It also “traps” the belt away from the
engine pulley when the belt is loose. The drawing
at left shows the correct position for the belt clip.
Adjustment is made by loosening the hex nut,
adjusting belt clip to position shown and
retightening hex nut securely.
BELT WEAR—Pulleys
For proper belt wear, all pulleys, including the
idler pulley, must be on the same plane. Improper
alignment will cause rapid belt wear.
DRIVE PULLEYS. See figure 24.
Alignment may be made by removing the deck.
Check alignment with a straight edge. The
transmission pulley is held in place with a hex nut
and lockwasher. It should not need adjustment.
The engine pulley is held in position by a hex head
bolt and washers. The idler bracket assembly is
held in position by a shoulder bolt. If realignment
is needed, it is necessary to bend bracket up or
down as alignment requires. Care must be taken
not to damage the belt clip.
BLADE PULLEYS
Raise front of mower approximately a foot off the
ground and support it with blocks, sight down
blade belt from front of mower. Note if blade idler
pulley is in line with blade spindle pulley and top
section
of engine pulley. If alignment is
necessary, bend idler bracket assembly up or
down as needed. Do not damage or bend belt clip
on idler bracket assembly.
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